The reading today is two of the most famous presidential statements in U.S. history–Lincoln’s Emancipation Proclamation (1-1-1863) and his Gettysburg Address (11-19-1863). Then we will read excerpts from the key Supreme Court case of the Civil War era, Ex parte Milligan–a case that has attracted new attention in the aftermath of 9/11 and the Bush administration’s policies toward detainees.

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Emancipation Proclamation; January 1, 1863

Whereas, on the twenty-second day of September, in the year of our Lord one thousand eight hundred and sixty-two, a proclamation was issued by the President of the United States, containing, among other things, the following, to wit:

“That on the first day of January, in the year of our Lord one thousand eight hundred and sixty-three, all persons held as slaves within any State or designated part of a State, the people whereof shall then be in rebellion against the United States, shall be then, thenceforward, and forever free; and the Executive Government of the United States, including the military and naval authority thereof, will recognize and maintain the freedom of such persons, and will do no act or acts to repress such persons, or any of them, in any efforts they may make for their actual freedom.

“That the Executive will, on the first day of January aforesaid, by proclamation, designate the States and parts of States, if any, in which the people thereof, respectively, shall then be in rebellion against the United States; and the fact that any State, or the people thereof, shall on that day be, in good faith, represented in the Congress of the United States by members chosen thereto at elections wherein a majority of the qualified voters of such State shall have participated, shall, in the absence of strong countervailing testimony, be deemed conclusive evidence that such State, and the people thereof, are not then in rebellion against the United States.”

Now, therefore I, Abraham Lincoln, President of the United States, by virtue of the power in me vested as Commander-in-Chief, of the Army and Navy of the United States in time of actual armed rebellion against the authority and government of the United States, and as a fit and necessary war measure for suppressing said rebellion, do, on this first day of January, in the year of our Lord one thousand eight hundred and sixty-three, and in accordance with my purpose so to do publicly proclaimed for the full period of one hundred days, from the day first above mentioned, order and designate as the States and parts of States wherein the people thereof respectively, are this day in rebellion against the United States, the following, to wit:

Arkansas, Texas, Louisiana, (except the Parishes of St. Bernard, Plaquemines, Jefferson, St. John, St. Charles, St. James Ascension, Assumption, Terrebonne, Lafourche, St. Mary, St. Martin, and Orleans, including the City of New Orleans) Mississippi, Alabama, Florida, Georgia, South Carolina, North Carolina, and Virginia, (except the forty-eight counties designated as West Virginia, and also the counties of Berkley, Accomac, Northampton, Elizabeth City, York, Princess Ann, and Norfolk, including the cities of Norfolk and Portsmouth[)], and which excepted parts, are for the present, left precisely as if this proclamation were not issued.

And by virtue of the power, and for the purpose aforesaid, I do order and declare that all persons held as slaves within said designated States, and parts of States, are, and henceforward shall be free; and that the Executive government of the United States, including the military and naval authorities thereof, will recognize and maintain the freedom of said persons.

And I hereby enjoin upon the people so declared to be free to abstain from all violence, unless in necessary self-defence; and I recommend to them that, in all cases when allowed, they labor faithfully for reasonable wages.

And I further declare and make known, that such persons of suitable condition, will be received into the armed service of the United States to garrison forts, positions, stations, and other places, and to man vessels of all sorts in said service.

And upon this act, sincerely believed to be an act of justice, warranted by the Constitution, upon military necessity, I invoke the considerate judgment of mankind, and the gracious favor of Almighty God.

In witness whereof, I have hereunto set my hand and caused the seal of the United States to be affixed.

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Gettysburg Address

Fourscore and seven years ago our fathers brought forth on this continent a new nation, conceived in liberty and dedicated to the proposition that all men are created equal.

Now we are engaged in a great civil war, testing whether that nation or any nation so conceived and so dedicated can long endure. We are met on a great battlefield of that war. We have come to dedicate a portion of that field as a final resting-place for those who here gave their lives that that nation might live. It is altogether fitting and proper that we should do this.

But in a larger sense, we cannot dedicate, we cannot consecrate, we cannot hallow this ground. The brave men, living and dead who struggled here have consecrated it far above our poor power to add or detract. The world will little note nor long remember what we say here, but it can never forget what they did here. It is for us the living rather to be dedicated here to the unfinished work which they who fought here have thus far so nobly advanced. It is rather for us to be here dedicated to the great task remaining before us–that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion–that we here highly resolve that these dead shall not have died in vain, that this nation under God shall have a new birth of freedom, and that government of the people, by the people, for the people shall not perish from the earth.

Ex parte Milligan (1866)

[This case was decided 9-0. But, as you’ll see the majority decision of five Justices offered fundamentally different reasoning than did the four Justices in the concurring opinion. In effect, this was a 5-4 decision.]

Summary, from ABA

The Issue
Does an armed conflict within the United States justify imposing military law?

What’s at Stake?
For five men, this case literally meant life or death. In constitutional law, it provides guidance about the extent of legal guarantees in wartime.

Facts and Background
In 1864, during the Civil War, the Union Army arrested Lambdin Milligan and four other men in Indiana. They were charged with plotting to steal weapons and free Confederate soldiers held in prisoner-of-war camps. A military court sentenced them to die, but they appealed for their release under the Constitution’s right of habeas corpus.

President Lincoln was very concerned about Southern sympathizers undermining the war effort in the North. These “Copperheads” were especially active in the southern parts of Ohio, Indiana, and Illinois. To combat this threat, President Lincoln issued a number of orders putting certain civilian areas in the North under military control and imposing martial (military) law. This enabled the military to arrest and try civilians whom they suspected of being disloyal.

However, the Constitution explicitly guarantees habeas corpus, which means that people have the right to go to court and have a judge determine if it is legal for them to be held. This is an important right, which prevents the authorities from acting illegally.

In the Milligan case, the Court had to decide whether Lincoln had followed the law and the Constitution when he authorized martial law.

The Decision
The decision was issued a year after the war ended. The unanimous Supreme Court held that the President had gone too far. The Court stressed that Indiana was not under attack and that Milligan was not connected with Confederate military service, nor was he a prisoner of war. He was arrested at home, not on a military maneuver. Even more important, the courts in Indiana were open and functioning normally during the war. The government could have charged him with treason and tried him in the courts, where he would have had the right to a jury and the right to a fair trial, under the Constitution.

The Impact of the Decision
Milligan was released from prison and never convicted by a civilian court.

Mr. Justice DAVIS delivered the opinion of the court.

The importance of the main question presented by this record cannot be overstated; for it involves the very framework of the government and the fundamental principles of American liberty.

During the late wicked Rebellion, the temper of the times did not allow that calmness in deliberation and discussion so necessary to a correct conclusion of a purely judicial question. Then, considerations of safety were mingled with the exercise of power; and feelings and interests prevailed which are happily terminated. Now that the public safety is assured, this question, as well as all others, can be discussed and decided without passion or the admixture of any element not required to form a legal judgment. We approach the investigation of this case, fully sensible of the magnitude of the inquiry and the necessity of full and cautious deliberation . . .

The controlling question in the case is this: Upon the facts stated in Milligan’s petition, and the exhibits filed, had the military commission mentioned in it jurisdiction, legally, to try and sentence him? Milligan, not a resident of one of the rebellious states, or a prisoner of war, but a citizen of Indiana for twenty years past, and never in the military or naval service, is, while at his home, arrested by the military power of the United States, imprisoned, and, on certain criminal charges preferred against him, tried, convicted, and sentenced to be hanged by a military commission, organized under the direction of the military commander of the military district of Indiana. Had this tribunal the legal power and authority to try and punish this man?

No graver question was ever considered by this court, nor one which more nearly concerns the rights of the whole [71 U.S. 2, 119] people; for it is the birthright of every American citizen when charged with crime, to be tried and punished according to law. The power of punishment is, alone through the means which the laws have provided for that purpose, and if they are ineffectual, there is an immunity from punishment, no matter how great an offender the individual may be, or how much his crimes may have shocked the sense of justice of the country, or endangered its safety. By the protection of the law human rights are secured; withdraw that protection, and they are at the mercy of wicked rulers. or the clamor of an excited people. If there was law to justify this military trial, it is not our province to interfere; if there was not, it is our duty to declare the nullity of the whole proceedings. The decision of this question does not depend on argument or judicial precedents, numerous and highly illustrative as they are. These precedents inform us of the extent of the struggle to preserve liberty and to relieve those in civil life from military trials. The founders of our government were familiar with the history of that struggle; and secured in a written constitution every right which the people had wrested from power during a contest of ages. By that Constitution and the laws authorized by it this question must be determined. The provisions of that instrument on the administration of criminal justice are too plain and direct, to leave room for misconstruction or doubt of their true meaning. Those applicable to this case are found in that clause of the original Constitution which says, ‘That the trial of all crimes, except in case of impeachment, shall be by jury;’ and in the fourth, fifth, and sixth articles of the amendments. The fourth proclaims the right to be secure in person and effects against unreasonable search and seizure; and directs that a judicial warrant shall not issue ‘without proof of probable cause supported by oath or affirmation.’ The fifth declares ‘that no person shall be held to answer for a capital or otherwise infamous crime unless on presentment by a grand jury, except in cases arising in the land or naval forces, or in the militia, when in actual service in time of war or public danger, nor be deprived [71 U.S. 2, 120] of life, liberty, or property, without due process of law.’ And the sixth guarantees the right of trial by jury, in such manner and with such regulations that with upright judges, impartial juries, and an able bar, the innocent will be saved and the guilty punished. It is in these words: ‘In all criminal prosecutions the accused shall enjoy the right to a speedy and public trial by an impartial jury of the state and district wherein the crime shall have been committed, which district shall have been previously ascertained by law, and to be informed of the nature and cause of the accusation, to be confronted with the witnesses against him, to have compulsory process for obtaining witnesses in his favor, and to have the assistance of counsel for his defence.’ These securities for personal liberty thus embodied, were such as wisdom and experience had demonstrated to be necessary for the protection of those accused of crime. And so strong was the sense of the country of their importance, and so jealous were the people that these rights, highly prized, might be denied them by implication, that when the original Constitution was proposed for adoption it encountered severe opposition; and, but for the belief that it would be so amended as to embrace them, it would never have been ratified.

Time has proven the discernment of our ancestors; for even these provisions, expressed in such plain English words, that it would seem the ingenuity of man could not evade them, are now, after the lapse of more than seventy years, sought to be avoided. Those great and good men foresaw that troublous times would arise, when rulers and people would become restive under restraint, and seek by sharp and decisive measures to accomplish ends deemed just and proper; and that the principles of constitutional liberty would be in peril, unless established by irrepealable law. The history of the world had taught them that what was done in the past might be attempted in the future. The Constitution of the United States is a law for rulers and people, equally in war and in peace, and covers with the shield of its protection all classes of men, at all times, [71 U.S. 2, 121] and under all circumstances. No doctrine, involving more pernicious consequences, was ever invented by the wit of man than that any of its provisions can be suspended during any of the great exigencies of government. Such a doctrine leads directly to anarchy or despotism, but the theory of necessity on which it is based is false; for the government, within the Constitution, has all the powers granted to it, which are necessary to preserve its existence; as has been happily proved by the result of the great effort to throw off its just authority.

Have any of the rights guaranteed by the Constitution been violated in the case of Milligan? and if so, what are they?

Every trial involves the exercise of judicial power; and from what source did not military commission that tried him derive their authority? Certainly no part of judicial power of the country was conferred on them; because the Constitution expressly vests it ‘in one supreme court and such inferior courts as the Congress may from time to time ordain and establish,’ and it is not pretended that the commission was a court ordained and established by Congress. They cannot justify on the mandate of the President; because he is controlled by law, and has his appropriate sphere of duty, which is to execute, not to make, the laws; and there is ‘no unwritten criminal code to which resort can be had as a source of jurisdiction.’

But it is said that the jurisdiction is complete under the ‘laws and usages of war.’

It can serve no useful purpose to inquire what those laws and usages are, whence they originated, where found, and on whom they operate; they can never be applied to citizens in states which have upheld the authority of the government, and where the courts are open and their process unobstructed. This court has judicial knowledge that in Indiana the Federal authority was always unopposed, and its courts always open to hear criminal accusations and redress grievances; and no usage of war could sanction a military trial there for any offerce whatever of a citizen in civil life, in nowise [71 U.S. 2, 122] connected with the military service. Congress could grant no such power; and to the honor of our national legislature be it said, it has never been provoked by the state of the country even to attempt its exercise. One of the plainest constitutional provisions was, therefore, infringed when Milligan was tried by a court not ordained and established by Congress, and not composed of judges appointed during good behavior.

Why was he not delivered to the Circuit Court of Indiana to be proceeded against according to law? No reason of necessity could be urged against it; because Congress had declared penalties against the offences charged, provided for their punishment, and directed that court to hear and determine them. And soon after this military tribunal was ended, the Circuit Court met, peacefully transacted its business, and adjourned. It needed no bayonets to protect it, and required no military aid to execute its judgments. It was held in a state, eminently distinguished for patriotism, by judges commissioned during the Rebellion, who were provided with juries, upright, intelligent, and selected by a marshal appointed by the President. The government had no right to conclude that Milligan, if guilty, would not receive in that court merited punishment; for its records disclose that it was constantly engaged in the trial of similar offences, and was never interrupted in its administration of criminal justice. If it was dangerous, in the distracted condition of affairs, to leave Milligan unrestrained of his liberty, because he ‘conspired against the government, afforded aid and comfort to rebels, and incited the people to insurrection,’ the law said arrest him, confine him closely, render him powerless to do further mischief; and then present his case to the grand jury of the district, with proofs of his guilt, and, if indicted, try him according to the course of the common law. If this had been done, the Constitution would have been vindicated, the law of 1863 enforced, and the securities for personal liberty preserved and defended.

Another guarantee of freedom was broken when Milligan was denied a trial by jury. The great minds of the country [71 U.S. 2, 123] have differed on the correct interpretation to be given to various provisions of the Federal Constitution; and judicial decision has been often invoked to settle their true meaning; but until recently no one ever doubted that the right of trial by jury was fortified in the organic law against the power of attack. It is now assailed; but if ideas can be expressed in words, and language has any meaning, this right-one of the most valuable in a free country-is preserved to every one accused of crime who is not attached to the army, or navy, or militia in actual service. The sixth amendment affirms that ‘in all criminal prosecutions the accused shall enjoy the right to a speedy and public trial by an impartial jury,’ language broad enough to embrace all persons and cases; but the fifth, recognizing the necessity of an indictment, or presentment, before any one can be held to answer for high crimes, ‘excepts cases arising in the land or naval forces, or in the militia, when in actual service, in time of war or public danger;’ and the framers of the Constitution, doubtless, meant to limit the right of trial by jury, in the sixth amendment, to those persons who were subject to indictment or presentment in the fifth.

The discipline necessary to the efficiency of the army and navy, required other and swifter modes of trial than are furnished by the common law courts; and, in pursuance of the power conferred by the Constitution, Congress has declared the kinds of trial, and the manner in which they shall be conducted, for offences committed while the party is in the military or naval service. Every one connected with these branches of the public service is amenable to the jurisdiction which Congress has created for their government, and, while thus serving, surrenders his right to be tried by the civil courts. All other persons, citizens of states where the courts are open, if charged with crime, are guaranteed the inestimable privilege of trial by jury. This privilege is a vital principle, underlying the whole administration of criminal justice; it is not held by sufference, and cannot be frittered away on any plea of state or political necessity. When peace prevails, and the authority of the government is undisputed, [71 U.S. 2, 124] there is no difficulty of preserving the safeguards of liberty; for the ordinary modes of trial are never neglected, and no one wishes it otherwise; but if society is disturbed by civil commotion-if the passions of men are aroused and the restraints of law weakened, if not disregarded- these safeguards need, and should receive, the watchful care of those intrusted with the guardianship of the Constitution and laws. In no other way can we transmit to posterity unimpaired the blessings of liberty, consecrated by the sacrifices of the Revolution.

It is claimed that martial law covers with its broad mantle the proceedings of this military commission. The proposition is this: that in a time of war the commander of an armed force (if in his opinion the exigencies of the country demand it, and of which he is to judge), has the power, within the lines of his military district, to suspend all civil rights and their remedies, and subject citizens as well as soldiers to the rule of his will; and in the exercise of his lawful authority cannot be restrained, except by his superior officer or the President of the United States.

If this position is sound to the extent claimed, then when war exists, foreign or domestic, and the country is subdivided into military departments for mere convenience, the commander of one of them can, if he chooses, within his limits, on the plea of necessity, with the approval of the Executive, substitute military force for and to the exclusion of the laws, and punish all persons, as he thinks right and proper, without fixed or certain rules.

The statement of this proposition shows its importance; for, if true, republican government is a failure, and there is an end of liberty regulated by law. Martial law, established on such a basis, destroys every guarantee of the Constitution, and effectually renders the ‘military independent of and superior to the civil power’-the attempt to do which by the King of Great Britain was deemed by our fathers such an offence, that they assigned it to the world as one of the causes which impelled them to declare their independence. Civil liberty and this kind of martial law cannot endure [71 U.S. 2, 125] together; the antagonism is irreconcilable; and, in the conflict, one or the other must perish.

This nation, as experience has proved, cannot always remain at peace, and has no right to expect that it will always have wise and humane rulers, sincerely attached to the principles of the Constitution. Wicked men, ambitious of power, with hatred of liberty and contempt of law, may fill the place once occupied by Washington and Lincoln; and if this right is conceded, and the calamities of war again befall us, the dangers to human liberty are frightful to contemplate. If our fathers had failed to provide for just such a contingency, they would have been false to the trust reposed in them. They knew-the history of the world told them-the nation they were founding, be its existence short or long, would be involved in war; how often or how long continued, human foresight could not tell; and that unlimited power, wherever lodged at such a time, was especially hazardous to freemen. For this, and other equally weighty reasons, they secured the inheritance they had fought to maintain, by incorporating in a written constitution the safeguards which time had proved were essential to its preservation. Not one of these safeguards can the President, or Congress, or the Judiciary disturb, except the one concerning the writ of habeas corpus.

It is essential to the safety of every government that, in a great crisis, like the one we have just passed through, there should be a power somewhere of suspending the writ of habeas corpus. In every war, there are men of previously good character, wicked enough to counsel their fellow- citizens to resist the measures deemed necessary by a good government to sustain its just authority and overthrow its enemies; and their influence may lead to dangerous combinations. In the emergency of the times, an immediate public investigation according to law may not be possible; and yet, the period to the country may be too imminent to suffer such persons to go at large. Unquestionably, there is then an exigency which demands that the government, if it should see fit in the exercise of a proper discretion to make arrests, should not be required to produce the persons arrested [71 U.S. 2, 126] in answer to a writ of habeas corpus. The Constitution goes no further. It does not say after a writ of habeas corpus is denied a citizen, that he shall be tried otherwise than by the course of the common law; if it had intended this result, it was easy by the use of direct words to have accomplished it. The illustrious men who framed that instrument were guarding the foundations of civil liberty against the abuses of unlimited power; they were full of wisdom, and the lessons of history informed them that a trial by an established court, assisted by an impartial jury, was the only sure way of protecting the citizen against oppression and wrong. Knowing this, they limited the suspension to one great right, and left the rest to remain forever inviolable. But, it is insisted that the safety of the country in time of war demands that this broad claim for martial law shall be sustained. If this were true, it could be well said that a country, preserved at the sacrifice of all the cardinal principles of liberty, is not worth the cost of preservation. Happily, it is not so.

It will be borne in mind that this is not a question of the power to proclaim martial law, when war exists in a community and the courts and civil authorities are overthrown. Nor is it a question what rule a military commander, at the head of his army, can impose on states in rebellion to cripple their resources and quell the insurrection. The jurisdiction claimed is much more extensive. The necessities of the service, during the late Rebellion, required that the loyal states should be placed within the limits of certain military districts and commanders appointed in them; and, it is urged, that this, in a military sense, constituted them the theater of military operations; and, as in this case, Indiana had been and was again threatened with invasion by the enemy, the occasion was furnished to establish martial law. The conclusion does not follow from the premises. If armies were collected in Indiana, they were to be employed in another locality, where the laws were obstructed and the national authority disputed. On her soil there was no hostile foot; if once invaded, that invasion was at an end, and with [71 U.S. 2, 127] it all pretext for martial law. Martial law cannot arise from a threatened invasion. The necessity must be actual and present; the invasion real, such as effectually closes the courts and deposes the civil administration.

It is difficult to see how the safety for the country required martial law in Indiana. If any of her citizens were plotting treason, the power of arrest could secure them, until the government was prepared for their trial, when the courts were open and ready to try them. It was as easy to protect witnesses before a civil as a military tribunal; and as there could be no wish to convict, except on sufficient legal evidence, surely an ordained and establish court was better able to judge of this than a military tribunal composed of gentlemen not trained to the profession of the law.

It follows, from what has been said on this subject, that there are occasions when martial rule can be properly applied. If, in foreign invasion or civil war, the courts are actually closed, and it is impossible to administer criminal justice according to law, then, on the theatre of active military operations, where war really prevails, there is a necessity to furnish a substitute for the civil authority, thus overthrown, to preserve the safety of the army and society; and as no power is left but the military, it is allowed to govern by martial rule until the laws can have their free course. As necessity creates the rule, so it limits its duration; for, if this government is continued after the courts are reinstated, it is a gross usurpation of power. Martial rule can never exist where the courts are open, and in the proper and unobstructed exercise of their jurisdiction. It is also confined to the locality of actual war. Because, during the late Rebellion it could have been enforced in Virginia, where the national authority was overturned and the courts driven out, it does not follow that it should obtain in Indiana, where that authority was never disputed, and justice was always administered. And so in the case of a foreign invasion, martial rule may become a necessity in one state, when, in another, it would be ‘mere lawless violence.’ [71 U.S. 2, 128] We are not without precedents in English and American history illustrating our views of this question; but it is hardly necessary to make particular reference to them.

. . . If the military trial of Milligan was contrary to law, then he was entitled, on the facts stated in his petition, to be discharged from custody by the terms of the act of Congress of March 3d, 1863. The provisions of this law having been considered in a previous part of this opinion, we will not restate the views there presented. Milligan avers he was a citizen of Indiana, not in the military or naval service, and was detained in close confinement, by order of the President, from the 5th day of October, 1864, until the 2d day of January, 1865, when the Circuit Court for the District of Indiana, with a grand jury, convened in session at Indianapolis; and afterwards, on the 27th day of the same month, adjourned without finding an indictment or presentment against him. If these averments were ture (and their truth is conceded for the purposes of this case), the court was required to liberate him on taking certain oaths prescribed by the law, and entering into recognizance for his good behavior.

But it is insisted that Milligan was a prisoner of war, and, therefore, excluded from the privileges of the statute. It is not easy to see how he can be treated as a prisoner of war, when he lived in Indiana for the past twenty years, was arrested there, and had not been, during the late troubles, a resident of any of the states in rebellion. If in Indiana he conspired with bad men to assist the enemy, he is punishable for it in the courts of Indiana; but, when tried for the offence, he cannot plead the rights of war; for he was not engaged in legal acts of hostility against the government, and only such persons, when captured, are prisoners of war. If he cannot enjoy the immunities attaching to the character of a prisoner of war, how can he be subject to their pains and penalties?

The CHIEF JUSTICE delivered the following opinion.

Four members of the court, concurring with their brethren in the order heretofore made in this cause, but unable to concur in some important particulars with the opinion which has just been read, think it their duty to make a separate statement of their views of the whole case.

. . . The crimes with which Milligan was charged were of the gravest character, and the petition and exhibits in the record, which must here be taken as true, admit his guilt. But whatever his desert of punishment may be, it is more important to the country and to every citizen that he should not be punished under an illegal sentence, sanctioned by this court of last resort, than that he should be punished at all. The laws which protect the liberties of the whole people must not be violated or set aside in order to inflict, even upon the guilty, unauthorized though merited justice.

The trial and sentence of Milligan were by military commission convened in Indiana during the fall of 1864. The action of the commission had been under consideration by President Lincoln for some time, when he himself became the victim of an abhorred conspiracy. It was approved by his successor in May, 1865, and the sentence was ordered to be carried into execution. The proceedings, therefore, had the fullest sanction of the executive department of the government. [71 U.S. 2, 133] This sanction requires the most respectful and the most careful consideration of this court. The sentence which it supports must not be set aside except upon the clearest conviction that it cannot be reconciled with the Constitution and the constitutional legislation of Congress.

. . . We agree, therefore, that the first two questions certified must receive affirmative answers, and the last a negative. We do not doubt that the positive provisions of the act of Congress require such answers. We do not think it necessary to look beyond these provisions. In them we find sufficient and controlling reasons for our conclusions.

But the opinion which has just been read goes further; and as we understand it, asserts not only that the military commission held in Indiana was not authorized by Congress, but that it was not in the power of Congress to authorize it; from which it may be thought to follow, that Congress has no power to indemnify the officers who composed the commission against liability in civil courts for acting as members of it.

We cannot agree to this.

We agree in the proposition that no department of the [71 U.S. 2, 137] government of the United States-neither President, nor Congress, nor the Courts-possesses any power not given by the Constitution.

We assent, fully, to all that is said, in the opinion, of the inestimable value of the trial by jury, and of the other constitutional safeguards of civil liberty. And we concur, also, in what is said of the writ of habeas corpus, and of its suspension, with two reservations: (1.) That, in our judgment, when the writ is suspended, the Executive is authorized to arrest as well as to detain; and (2.) that there are cases in which, the privilege of the writ being suspended, trial and punishment by military commission, in states where civil courts are open, may be authorized by Congress, as well as arrest and detention.

We think that Congress had power, though not exercised, to authorize the military commission which was held in Indiana.

We do not think it necessary to discuss at large the grounds of our conclusions. We will briefly indicate some of them.

The Constitution itself provides for military government as well as for civil government. And we do not understand it to be claimed that the civil safeguards of the Constitution have application in cases within the proper sphere of the former.

What, then, is that proper sphere? Congress has power to raise and support armies; to provide and maintain a navy; to make rules for the government and regulation of the land and naval forces; and to provide for governing such part of the militia as may be in the service of the United States.

It is not denied that the power to make rules for the government of the army and navy is a power to provide for trial and punishment by military courts without a jury. It has been so understood and exercised from the adoption of the Constitution to the present time.

Nor, in our judgment, does the fifth, or any other amendment, abridge that power. ‘Cases arising in the land and naval forces, or in the militia in actual service in time of war [71 U.S. 2, 138] or public danger,’ are expressly excepted from the fifth amendment, ‘that no person shall be held to answer for a capital or otherwise infamous crime, unless on a presentment or indictment of a grand jury,’ and it is admitted that the exception applies to the other amendments as well as to the fifth.

Now, we understand this exception to have the same import and effect as if the powers of Congress in relation to the government of the army and navy and the militia had been recited in the amendment, and cases within those powers had been expressly excepted from its operation. The states, most jealous of encroachments upon the liberties of the citizen, when proposing additional safeguards in the form of amendments, excluded specifically from their effect cases arising in the government of the land and naval forces. Thus Massachusetts proposed that ‘no person shall be tried for any crime by which he would incur an infamous punishment or loss of life until he be first indicted by a grand jury, except in such cases as may arise in the government and regulation of the land forces.’ The exception in similar amendments, proposed by New York, Maryland, and Virginia, was in the same or equivalent terms. The amendments proposed by the states were considered by the first Congress, and such as were approved in substance were put in form, and proposed by that body to the states. Among those thus proposed, and subsequently ratified, was that which now stands as the fifth amendment of the Constitution. We cannot doubt that this amendment was intended to have the same force and effect as the amendment proposed by the states. We cannot agree to a construction which will impose on the exception in the fifth amendment a sense other than that obviously indicated by action of the state conventions.

We think, therefore, that the power of Congress, in the government of the land and naval forces and of the militia, is not at all affected by the fifth or any other amendment. It is not necessary to attempt any precise definition of the boundaries of this power. But may it not be said that government [71 U.S. 2, 139] includes protection and defence as well as the regulation of internal administration? And is it impossible to imagine cases in which citizens conspiring or attempting the destruction or great injury of the national forces may be subjected by Congress to military trial and punishment in the just exercise of this undoubted constitutional power? Congress is but the agent of the nation, and does not the security of individuals against the abuse of this, as of every other power, depend on the intelligence and virtue of the people, on their zeal for public and private liberty, upon official responsibility secured by law, and upon the frequency of elections, rather than upon doubtful constructions of legislative powers?

But we do not put our opinion, that Congress might authorize such a military commission as was held in Indiana, upon the power to provide for the government of the national forces.

Congress has the power not only to raise and support and govern armies but to declare war. It has, therefore, the power to provide by law for carrying on war. This power necessarily extends to all legislation essential to the prosecution of war with vigor and success, except such as interferes with the command of the forces and the conduct of campaigns. That power and duty belong to the President as commander-in-chief. Both these powers are derived from the Constitution, but neither is defined by that instrument. Their extent must be determined by their nature, and by the principles of our institutions.

The power to make the necessary laws is in Congress; the power to execute in the President. Both powers imply many subordinate and auxiliary powers. Each includes all authorities essential to its due exercise. But neither can the President, in war more than in peace, intrude upon the proper authority of Congress, nor Congress upon the proper authority of the President. Both are servants of the people, whose will is expressed in the fundamental law. Congress cannot direct the conduct of campaigns, nor can the President, [71 U.S. 2, 140] or any commander under him, without the sanction of Congress, institute tribunals for the trial and punishment of offences, either of soldiers or civilians, unless in cases of a controlling necessity, which justifies what it compels, or at least insures acts of indemnity from the justice of the legislature.

We by no means assert that Congress can establish and apply the laws of war where no war has been declared or exists.

Where peace exists the laws of peace must prevail. What we do maintain is, that when the nation is involved in war, and some portions of the country are invaded, and all are exposed to invasion, it is within the power of Congress to determine in what states or district such great and imminent public danger exists as justifies the authorization of military tribunals for the trial of crimes and offences against the discipline or security of the army or against the public safety.

In Indiana, for example, at the time of the arrest of Milligan and his co-conspirators, it is established by the papers in the record, that the state was a military district, was the theatre of military operations, had been actually invaded, and was constantly threatened with invasion. It appears, also, that a powerful secret association, composed of citizens and others, existed within the state, under military organization, conspiring against the draft, and plotting insurrection, the liberation of the prisoners of war at various depots, the seizure of the state and national arsenals, armed cooperation with the enemy, and war against the national government.

We cannot doubt that, in such a time of public danger, Congress had power, under the Constitution, to provide for the organization of a military commission, and for trial by that commission of persons engaged in this conspiracy. The fact that the Federal courts were open was regarded by Congress as a sufficient reason for not exercising the power; but that fact could not deprive Congress of the right to exercise it. Those courts might be open and undisturbed in the execution [71 U.S. 2, 141] of their functions, and yet wholly incompetent to avert threatened danger, or to punish, with adequate promptitude and certainty, the guilty conspirators.

In Indiana, the judges and officers of the courts were loyal to the government. But it might have been otherwise. In times of rebellion and civil war it may often happen, indeed, that judges and marshals will be in active sympathy with the rebels, and courts their most efficient allies.

We have confined ourselves to the question of power. It was for Congress to determine the question of expediency. And Congress did determine it. That body did not see fit to authorize trials by military commission in Indiana, but by the strongest implication prohibited them. With that prohibition we are satisfied, and should have remained silent if the answers to the questions certified had been put on that ground, without denial of the existence of a power which we believe to be constitutional and important to the public safety,-a denial which, as we have already suggested, seems to draw in question the power of Congress to protect from prosecution the members of military commissions who acted in obedience to their superior officers, and whose action, whether warranted by law or not, was approved by that upright and patriotic President under whose administration the Republic was rescued from threatened destruction.

We have thus far said little of martial law, nor do we propose to say much. What we have already said sufficiently indicates our opinion that there is no law for the government of the citizens, the armies or the navy of the United States, within American jurisdiction, which is not contained in or derived from the Constitution. And wherever our army or navy may go beyond our territorial limits, neither can go beyond the authority of the President or the legislation of Congress.

There are under the Constitution three kinds of military jurisdiction: one to be exercised both in peace and war; another to be exercised in time of foreign war without the boundaries of the United States, or in time of rebellion and civil war within states or districts occupied by rebels treated [71 U.S. 2, 142] as belligerents; and a third to be exercised in time of invasion or insurrection within the limits of the United States, or during rebellion within the limits of states maintaining adhesion to the National Government, when the public danger requires its exercise. The first of these may be called jurisdiction under MILITARY LAW, and is found in acts of Congress prescribing rules and articles of war, or otherwise providing for the government of the national forces; the second may be distinguished as MILITARY GOVERNMENT, superseding, as far as may be deemed expedient, the local law, and exercised by the military commander under the direction of the President, with the express or implied sanction of Congress; while the third may be denominated MARTIAL LAW PROPER, and is called into action by Congress, or temporarily, when the action of Congress cannot be invited, and in the case of justifying or excusing peril, by the President, in times of insurrection or invasion, or of civil or foreign war, within districts or localities where ordinary law no longer adequately secures public safety and private rights.

We think that the power of Congress, in such times and in such localities, to authorize trials for crimes against the security and safety of the national forces, may be derived from its constitutional authority to raise and support armies and to declare war, if not from its constitutional authority to provide for governing the national forces.

We have no apprehension that this power, under our American system of government, in which all official authority is derived from the people, and exercised under direct responsibility to the people, is more likely to be abused than the power to regulate commerce, or the power to borrow money. And we are unwilling to give our assent by silence to expressions of opinion which seem to us calculated, though not intended, to cripple the constitutional powers of the government, and to augment the public dangers in times of invasion and rebellion.